How We Have Used Appropriate Technology

In this article we look at how Neale Consulting Engineers have used appropriate technology to solve engineering problems in developing countries.

Design of a Novel Design of Gearbox for a Water-Pumping Windmill

A small scale water pumping windmill with a novel mechanism concept for improved efficiency was being developed by a client.

Neale Consulting Engineers were asked to analyse the various options for designing the mechanism, and to assist with detailed design of the most promising option. The final design involved a combination of plastic and steel gears, which could operate reliably without any lubrication.

Redesign of Water Turbines for Developing Country Manufacture

Two water turbine designs were redesigned to make them suitable for manufacture in developing countries. This required considerable changes to the shaft, bearings and seals to suit available components and manufacturing facilities.

Evaluation of an Appropriate Technology Steam Engine Design

A light duty steam engine originally used to power small boats was being used in small industries in developing countries, and was proving to be unreliable.

Evaluation of the design demonstrated scope for substantial improvements to the bearings, cranks, and the various sliding surfaces in the cylinders, valves and seals.

Design of appropriate technology pumping cylinders for shallow wells

Low cost single acting piston and cylinder pumps were designed for manufacture in developing countries. A range of sizes was designed, to suit the requirements of hand pumps and wind pumps.

Feasibility study for a combined water pumping and refrigeration system using wind power in developing countries.

The study looked at a range of equipment options and concluded that the best was mechanical windmills using compressed air as the energy transmission medium.

Expansion of the compressed air provided pumping energy and also a cooling effect, sufficient to cool a large grain store. System efficiencies and costs were estimated, using appropriate climatic data